2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 /* CV 2006-07-04: Tweaked for inclusion into Cygwin. */
34 #if defined(LIBC_SCCS) && !defined(lint)
35 static char sccsid[] = "@(#)rexec.c 8.1 (Berkeley) 6/4/93";
36 #endif /* LIBC_SCCS and not lint */
45 #include <sys/types.h>
47 #include <sys/socket.h>
48 #include <sys/param.h>
51 #include <netinet/in.h>
64 int cygwin_accept (int, struct sockaddr *, socklen_t *);
65 int cygwin_connect (int, const struct sockaddr *, socklen_t);
66 int cygwin_getsockname (int, struct sockaddr *, socklen_t *);
67 void cygwin_herror (const char *);
68 int cygwin_listen (int, int);
69 int cygwin_socket (int, int, int);
73 * Options and other state info.
76 char mac_name[9]; /* macro name */
77 char *mac_start; /* start of macro in macbuf */
78 char *mac_end; /* end of macro in macbuf */
81 int macnum; /* number of defined macros */
82 struct macel macros[16];
95 static char tokval[100];
97 static struct toktab {
101 { "default", DEFAULT },
103 { "password", PASSWD },
104 { "passwd", PASSWD },
105 { "account", ACCOUNT },
107 { "macdef", MACDEF },
118 if (feof(cfile) || ferror(cfile))
120 while ((c = getc(cfile)) != EOF &&
121 (c == '\n' || c == '\t' || c == ' ' || c == ','))
127 while ((c = getc(cfile)) != EOF && c != '"') {
134 while ((c = getc(cfile)) != EOF
135 && c != '\n' && c != '\t' && c != ' ' && c != ',') {
144 for (t = toktab; t->tokstr; t++)
145 if (!strcmp(t->tokstr, tokval))
151 ruserpass(const char *host, char **aname, char **apass, char **aacct)
154 char buf[BUFSIZ], *tmp;
155 char myname[INTERNET_MAX_HOST_NAME_LENGTH + 1];
156 const char *mydomain;
157 int t, i, c, usedefault = 0;
160 hdir = getenv("HOME");
163 if (strlen(hdir) + 8 > sizeof(buf))
165 (void) sprintf(buf, "%s/.netrc", hdir);
166 cfile = fopen(buf, "r");
172 if (cygwin_gethostname(myname, sizeof(myname)) < 0)
174 if ((mydomain = strchr(myname, '.')) == NULL)
177 while ((t = token())) switch(t) {
188 * Allow match either for user's input host name
189 * or official hostname. Also allow match of
190 * incompletely-specified host in local domain.
192 if (strcasecmp(host, tokval) == 0)
194 if ((tmp = strchr(host, '.')) != NULL &&
195 strcasecmp(tmp, mydomain) == 0 &&
196 strncasecmp(host, tokval, tmp - host) == 0 &&
197 tokval[tmp - host] == '\0')
202 while ((t = token()) && t != MACH && t != DEFAULT) switch(t) {
207 *aname = (char *) malloc((unsigned) strlen(tokval) + 1);
208 (void) strcpy(*aname, tokval);
210 if (strcmp(*aname, tokval))
216 if ((*aname == 0 || strcmp(*aname, "anonymous")) &&
217 fstat64(fileno(cfile), &stb) >= 0 &&
218 (stb.st_mode & 077) != 0) {
219 warnx("Error: .netrc file is readable by others.");
220 warnx("Remove password or make file unreadable by others.");
223 if (token() && *apass == 0) {
224 *apass = (char *) malloc((unsigned) strlen(tokval) + 1);
225 (void) strcpy(*apass, tokval);
229 if (fstat64(fileno(cfile), &stb) >= 0
230 && (stb.st_mode & 077) != 0) {
231 warnx("Error: .netrc file is readable by others.");
232 warnx("Remove account or make file unreadable by others.");
235 if (token() && aacct && *aacct == 0) {
236 *aacct = (char *) malloc((unsigned) strlen(tokval) + 1);
237 (void) strcpy(*aacct, tokval);
241 while ((c=getc(cfile)) != EOF &&
242 (c == ' ' || c == '\t'))
244 if (c == EOF || c == '\n') {
245 printf("Missing macdef name argument.\n");
249 printf("Limit of 16 macros have already been defined\n");
252 tmp = macros[macnum].mac_name;
254 for (i=0; i < 8 && (c=getc(cfile)) != EOF &&
259 printf("Macro definition missing null line terminator.\n");
264 while ((c=getc(cfile)) != EOF && c != '\n');
267 printf("Macro definition missing null line terminator.\n");
271 macros[macnum].mac_start = macbuf;
274 macros[macnum].mac_start = macros[macnum-1].mac_end + 1;
276 tmp = macros[macnum].mac_start;
277 while (tmp != macbuf + 4096) {
278 if ((c=getc(cfile)) == EOF) {
279 printf("Macro definition missing null line terminator.\n");
284 if (*(tmp-1) == '\0') {
285 macros[macnum++].mac_end = tmp - 1;
292 if (tmp == macbuf + 4096) {
293 printf("4K macro buffer exceeded\n");
298 warnx("Unknown .netrc keyword %s", tokval);
304 (void) fclose(cfile);
307 (void) fclose(cfile);
312 cygwin_rexec (char **ahost, unsigned short rport, char *name, char *pass,
313 char *cmd, int *fd2p)
315 struct sockaddr_in sin, sin2, from;
320 char ahostbuf[INTERNET_MAX_HOST_NAME_LENGTH + 1];
322 sig_dispatch_pending ();
324 if (efault.faulted (EFAULT))
327 hp = cygwin_gethostbyname(*ahost);
329 cygwin_herror(*ahost);
332 *ahost = strcpy (ahostbuf, hp->h_name);
333 ruserpass(hp->h_name, &name, &pass, NULL);
339 s = cygwin_socket(AF_INET, SOCK_STREAM, 0);
341 perror("rexec: socket");
344 sin.sin_family = hp->h_addrtype;
345 sin.sin_port = rport;
346 bcopy(hp->h_addr, (caddr_t)&sin.sin_addr, hp->h_length);
347 if (cygwin_connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
348 if (errno == ECONNREFUSED && timo <= 16) {
358 (void) write(s, "", 1);
363 s2 = cygwin_socket(AF_INET, SOCK_STREAM, 0);
368 cygwin_listen(s2, 1);
369 sin2len = sizeof (sin2);
370 if (cygwin_getsockname(s2, (struct sockaddr *)&sin2, &sin2len) < 0 ||
371 sin2len != sizeof (sin2)) {
372 perror("getsockname");
376 port = ntohs((u_short)sin2.sin_port);
377 (void) sprintf(num, "%u", port);
378 (void) write(s, num, strlen(num)+1);
379 { int len = sizeof (from);
380 s3 = cygwin_accept(s2, (struct sockaddr *)&from, &len);
390 (void) write(s, name, strlen(name) + 1);
391 /* should public key encypt the password here */
392 (void) write(s, pass, strlen(pass) + 1);
393 (void) write(s, cmd, strlen(cmd) + 1);
394 if (read(s, &c, 1) != 1) {
399 while (read(s, &c, 1) == 1) {
400 (void) write(2, &c, 1);